It typically takes about 30-45 minutes for a cup of ice to melt at room temperature. This can vary depending on the temperature of the room and the size of the ice cubes.
at room temperature about 4 hours
Room temperature
Yes, it is possible.
The hot cup loses heat faster, but only until it becomes a warm cup itself. Then it loses heat as the warm cup did at the beginning. However, by this point, the hot cup is warm, but the warm cup is now cooler too. Therefore, the warm cup will still become room temperature first.
If you mean *exactly* one cup by volume, you have the iceberg scenario. The cup of frozen water will be less dense, so it will weigh less. If you just freeze a cup of water, don't spill any, and *don't* trim the excess to bring the volume back to exactly one cup, then it will weigh exactly what it did at room temp.
A hot cup of coffee will cool down at a certain rate, but as the coffee cools, the rate at which it cools slows down. This is why a "lukewarm" cup of coffee cools down so slowly. Even though the warm cup of coffee is cooling down quicker at first, the lukewarm cup essentially has a "head start" on the way to room temperature.
Room temperature is different in every room so I cant tell you what it is but I can tell you how to find out! Take any thermometer or a tool that measures heat (in celsius for your matter) and take a cup of water. Let the water sit for an hour inside the room that you find out the room temperature. Then put your thermometer in it and see what it measures to :) 20 degrees celcius
Well, you can put it in a cup with room temperature water for a few minutes. Or in your mouth.
None. Sugar goes into solution. Salt dissolves separating into Na and Cl attached to Water.
The rate of heat loss from the hot cup likely decreased over time as the temperature of the cup approached that of the surroundings. Initially, when the cup was hot, the rate of heat loss would have been higher due to the temperature difference between the cup and the surroundings. As the cup cooled down and approached equilibrium with the room temperature, the rate of heat loss would have reduced.
In the cup of boiling water, the water molecules have higher kinetic energy and move faster, leading to more chaotic movement. In the cup of ice-cold water, the water molecules have lower kinetic energy and move more slowly, resulting in a more orderly and structured movement.